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介绍一种新型结构的１．５μｍ光纤型极化器。采用这种新型结构，器件最佳性能指标为：消光比大于５５ｄＢ；插入损耗小于０．５ｄＢ；并成功地解决了光纤型极化器制作过程中的生产效率和质量稳定性方面的问题。目前已可实现１．５μｍ光纤型极化器的小批量生产，成品率高达９０％以上，且制作周期短、成本很低；批量制作时器件指标为：消光比大于３５ｄＢ，插入损耗小于１ｄＢ。
A new type of 1.5μm fiber type polarizer is introduced. With this new structure, the best performance index of the device is: the extinction ratio is greater than 55dB; the insertion loss is less than 0.5dB; and the problems in the production efficiency and the quality stability of the optical fiber polarizer are successfully solved. At present, the 1.5μm optical fiber type polarizer can be manufactured in small quantities with a yield of more than 90%. The manufacturing cycle is short and the cost is very low. The device specifications in batch production are extinction ratio greater than 35dB and insertion loss less than 1dB.